,s you see, he brought michelle he talked about mandela's influence on his life. in this forward that senator obama wrote the book by mandela, he said, "too many of us, he was more than just a man. of the struggle for justice, equality, and dignity in south africa and around the globe. his sacrifice was so great that it called upon people everywhere to do what they could on behalf of human progress." and there you see his daughters got to go in the cell as well come a very emotional experience for the entire obama family. really, i do not think that you can overstate how much of an influence mandela has been on barack obama. >> john, we are learning that we will hear from the president shortly on the passing of nelson mandela. the images of the president, the first lady, the daughters in that cell. that was a trip to south africa, not long ago. in the archive room, we look at some of the letters that he wrote to children and family members, winnie mandela, when he was in the cell, and he would often practice the letters in a nopal, write a draft of them before sen